The red pigment also has antibacterial properties, which work to protect the hippo from certain pathogens and accelerate its recovery from wounds. River horse. The hippopotamus-or river horse - is a belligerent creature, which puzzled the ancient Greeks by apparently sweating blood. In fact, the thick red substance, which oozes from glands all over its skin, is one of the hippo's many ingenious survival tools.
A gastrografin enema is an X-ray of the large intestine that includes the colon and rectum. It is used to diagnose problems such as obstructions and perforations in the bowel.
Gastrografin is a contrast medium (a dye) which contains iodine. It is used to clearly show on X-rays the area of your body that your doctor wants to investigate. This will be your gullet (oesophagus), stomach or intestines (gastrointestinal tract).